Crusher.



R. C. NEWHOUSE.

RUSHEB.

ArrLIoATIoN FILED JULY 22, 191s.

1,065,332, Patented June 17,1913.

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l l l I l I l I l l I l l l l l WITNESEIEE- Inn/ENTER- *wm Y A-l--l-l: RN EV- UNITED s'rAtrEs PATENT oEEroE.

RAY C. NEWHOUSE, OE MILWAUKEE, WISCONSIN, ASSIG-NOR TO .ALLIS-CHALMEBS COMPANY, OF MLWAUKEE, WISCONSIN, A CORPORATION 0F NEW JERSEY.

CRUSHER.

Specification ot Letters Patent. .Patented June 17 ,1913.

Application Med July 22, 1912. Seal No. 711,333.

To all whom t may concern:

Be it known that I, RAY C NEwHo'UsE, a citizen of the United States, residing at Milwau'kee, in the county of Milwaukee and yState of Wisconsin, have invented a certain An object of the invention is to provide a` Crusher in which material is crushed by the direct approach of at least one of a pair of crushing L members toward the other, the feeding of the material through the crushi ing chamber being accomplished by so rotating the crushing members that centrifugal force will automatically advance the mate rial from the feed to the discharge end of the crusher.

Another object of the invention is to provide a Crusher in which the crushing is accomplished by Aadmitting fluid under pres-- sure between opposed surfaces carried by the crushing members.

A clear conception of an embodiment of the invention may be had by referring to the drawing accompanying and forming art of this speciication in which like re erence characters designate the'same parts in the various views.

Figure 1 is a transverse vertical section through a Huid pressure actuated Crusher. 2 is an end view of the crusher disclosed in Fig. 1, the relief valve, tank and piping at the end of the Crusher having been omitted in order to more clearly disclose other details of the apparatus.

The Crusher consistsessentially of a pair of opposed crushing members 3, 8, which are provided with corrugated liners 6, 7, respectively. The crushing chamber formed between the corrugated liners 6, 7, has the feed hopper 1 directed into its mid-portion and is provided with a free discharge passage adjacent the peripheries of the liners 6, 7.

The housing 2 which is provided with a discharge opening 10 at its lower end, incloses the crushing elements.

The hollow outer shaft 12is supported in the bearing 11 of the frame 15 and has an outwardly projecting flange 4 formed intep sleeved on the bolts.

gral with one of its ends. The crushing member 3 fixed to the iange 4 of the hol low shaft 12 by means of a series of bolts which pass through the member 3 and flange 4" and clamp these members against the ends of distance pieces or sleeves 5 preferably The inner shaft 9 is supported within and concentrically with the outer shaft 12 and has the crushing member 8 formed integral therewith. A means fo-rpreventing relative rotation between the members 3, 8, is provided in the form of a spline 13 which is secured to the inner shaft 9 and is adapted to slide in a recess formedl in the outer shaft 12. Such means for preventing relative rotationY between the crushing members 3, 8, is necessary only when the corrugations of the liners 6, 7, project within each other, and would not be necessary if uncorrugated liners 6, 7, were used.

The outer shaft- 12 is provided with an outwardly projecting flange 50 to which the casing 26 and the driving p ulley 25 are secured by any suitable means, such as a series of cap screws 51. The'pulley 25 is connected with the motor 47 by means of a belt 45. The piston 24 is secured to the end of the inner shaft 9 and is adapted to lit snugly within the bore of the casing 26. The packing ring 28, carried by the piston 24, coacts withthe bore yof the casing 26. The main pressure chamber 27 is formed between a surface'of the piston 24 and an opposed surface of the casing 2,6. The spring 14 which is normally under compression, coacts with its one end against an end surface of the piston v24 and with its opposite end against an end surface of the outer shaft 12, thus tending at all times to force the crushing member 8 away from thecrushing member 3.

The displacementpiston or plunger 30 is adapted to be reciprocated in the displacement chamber 37 of the' displacement cylinder 29 by means of a crank shaft 32 to which the plunger 30 is connectedby means of the connect-ing rod 31.. The crank shaft 32 is adapted to be rotated by means of a motor 47 which drives the pulley 33 through a belt 46. The displacement chamber 37 is connected, by means of an open conduit, di-

rectly with the chamber 27 formed in the casing 26. The joint between the displacement cylinder 29 and the casing 26 is packed by means of a suitable stuffing box 38. The valve or cock 35 is adapted to exhaust air from the displacement chamber 37 and the chamber 27.

.The supply pump 42, which is driven directly and continuously by the crank shaft 32. has a suction conduit 44 which connects with the fluid supply reservoir 1G formed in the frame 15 directly below the bearing 11. The supply conduit 44 is controllable by means of a manually operable needle valve 43. The discharge pipe 34 of the pump 42 is divided into two branches 36, 39, the one branch 36 of which connects directly with the interior of the displacement piston chainber 37. The second branch pipe 39 connects throughr a pressure relief valve 40 with a relief reservoir or tank 41. The lower end of the relief tank 41 connects directly with the suction side of the supply pump 42.

The piston 24 carries at one portion thereof a small piston 22 which has an axis parallel with that of the crushing members 3. 8. and closely fits a bore in the flange of the outer shaft 12. A passage 21 is formed through the outer shaft 12 and flange 50 and connects withthe bore in which the small piston 22 is fitted. The connection ofthe passage 21 with this bore is controlled by means ofinlet and discharge valves 56, 55. The passage 21 connects at its one end with the periphery of the chamber 23 formed between the piston 24 and the flange 50, and with its opposite end with a groove 2() formed in the shaft 12 between the bore ot the hollow shaft 12 and the outer surface of' the inner shaft. 9. The groove 2O is connected with an annular groove 18 adjacent the inner shaft 9, which is connected by means of a discharge conduit 19 with the groove 52 formed in the bearing 11. The groove 52 is direct connectedby means of a conduit 17 with the fluid supply reservoir lti. The fluid within the reservoir 16 may be replenished by removal of the filling plug 48.

Duringthe normal operation of the Crusher the operating chamber 27, the dis placement chamber 37. and the conduit connecting these chambers areV lled with a Afluid, preferably oil. rlhe crushing member 3 is rotated by means of the belt 45 driven by the motor 47 and coacting with the pulley 25. The displacement piston .30 is reciprocated by means of the belt 46 driven by the motor 47 and coacting with the pulley 33. As the pulley 33 is considerably smaller than the pulley 25, the plunger 30 will comincassa chamber formed between the corrugated liners 6, 7, through the inlet hopper 1. As the displacement plun er 30 reciprocates it alternately forces fluid from the displacement chamber 37 into the chamber 27 during its forward stroke, and returns this fluid to the chamber 37 during the return stroke. In forcing the fluid from the chamber 37 into the chamber 27, the plunger 30 compresses the fluid and exerts a pressure against the piston 24 in a'direction toward the crushing members 3, 8, and against the opposed surface of the casing 26 in a direction away from the crushing members. This forward pressure against the piston 24, and rearward pressure against the casing 26, causes the crushing member 8 to directly approach the member 3, thereby crushing the material within the crushing chamber by the direct approach of the crushing members toward each other. During the return strokeof the displacement plunger 30 and the resulting withdrawal of fluid from the chamber 27, the spring 14 as well as the slight suction produced within the chamber' 27, cause the piston 24 and crushing member 8 to recede from the member 3. During this recession of the member 8 the material Within the crushing chamber is forced to ward the peripheries of the corrugated liners 6, 7, by the action of centrifugal force. After successive approaches and recessions of the crushing member 8 toward and away from the member 3, the material is eventually reduced sufficiently to permit its free passage from the discharge opening at the peripheries of the liners 6, 7.

Due to the enormous fluid pressure within the chamber 27 during the crushing stroke, considerable leakage of the fluid from within the chamber 27 past the piston 24 and packing ring 28 will take place. In order to maintain a constant volume of the fluid within the chambers 27, 37, the pump 42 is driven continuously and its suction inlet 44 is throttled by means of the needle valve 43 to permit the passage of an amount of fluid through the pump 42 which is just sufficient to replace the leakage. If air is entrained into the chambers 27, 37 it should be withdrawn through the air cock 35, since the compression of such entrained air during the crushing stroke of the crushing member 8 would lower the eciency of the machine. If by accident some unbreakable material, as for instance abolt, is thrown into the crushing chamber, the forward crushing motion of the crushing member 8.

will be suddenly arrested and the pressure within the chambers 27 37, will rise to a sufficient extent to cause the safety valve 40 to open and by-pass a portion of the fluid from the displacement chamber 37 through the branch pipes 36, 39, through the valve 40,` into the chamber 41. The fluid thus bylos passed will be taken from the chamber 41V directly into the suction of the pump 42 and returned to the displacement piston chamber 3T. rl`he fluid which 'leaks past the piston 24 and packing ring 28 into the chamber 23 is held against the peripheral surfaces of the chamber 23 by t-he actionof centrifugal force thereon. The reciprocation ofthe piston 24 causes the small piston 22 to reciprocate within the bore formed in the flange 50. yDuring the motion of the small piston 22 away 21 and nearest the periphery of the flange 50 is opened and fluid is withdrawnfrom the periphery of the chamber 23 .to the chamber formed between the-two small flap valves o6, 55.

During the forward or crushing stroke of.

the bearing 11. After lubricating the bearing 11, the oil passes through the conduit'l? to the oil supply reservoir 16. From the oil supply reservoir 16 the iuid is eventually drawn through the suction conduit 44 to the pump 42.

By forming the liners 6, 7, with the corrugations of one extending into those of the other, positive means for preventing the free passage of flat pieces of rock through the crushing chamber is provided. It should also be noted that the fluid yof the crusher actuated system is entirely inclosed, thus preventing the admission of dust or gritty material thereto. The replenishing of the leakage fluid is entirely automatic after the needle valve 43 has been properly set. The safety valve 40 and tank 41 provide a simple and efficient means for preventing injury to the crushing elements in casel a piece of iron or similar material is admitted to the crushing chamber.

It is not essential to employ a motor 47 as disclosed for driving the deyice, as any other desirable power supplying means might be' substituted.

By using an incompressible fluid such as oil, the stroke of the crushing member 3 will be maintained constant unless the stroke of the displacement plunger 30 is varied. The use of oil as a working fluid also provides a simple and eflicient means for lubricating the working parts.

It should be understood that it is not desired to be limited to the exact details of from the crushing member 3, the flap valve 56 in the passage construction shown and described, for obvious modifications will occur to a person skilled in the art.

It is claimed and desired to secure by Letters Patent,

l'1. A crusher comprising a pair of rigid f crushing members symmetrically disposed about a common axis and having crushing surfa.ces,`said members being rotatable to feed material along vthe crushing surfaces thereof, means for permitting fluid pressure to act directly between said members for taking up the reactive thrustinduced by crushing and for causing said crushing surfaces to relatively approach each other.

2. A crusher comprising a pair of rigid crushing members symmetrically disposed about a common axis and having crushing surfaces, said members being rotatable to feed material along the crushing surfaces thereof, means for permitting fluid pressure to actdirectly between said members for taking up the reactive thrust induced by crushing and for causing at least one of said members to move along said axis to crush material.

3. A crusher comprising a pair of rigid coaxial members symmetrically disposed about their commonaxis and having crushing su'r-l faces, saidmembers being rotatable only in the same direction to feed material along the crushing surfaces thereof, and means for effecting the relative approach of said crushing surfaces to crush material.

4. A crusher comprising a pair of rigid coaxial members symmetrically disposed about their common axis and having crushing surfaces, said members being rotatable only in the same direction to feed material along the crushing surfaces thereof, and means for effecting the relative approach of said members along their axes to crush material.

5. A crusher comprisingv a pair of rigid crushing members symmetrically disposed about a common axis and having crushing surfaces, said members being rotatable to feed materia-l along the crushing surfaces `thereof, and means for permitting liquid under pressure to actdirectly between said members for moving one of said members toward the other to crush material.

6. A crusher comprising a pair of rigid crushing members symmetrically disposed about a common axis and having crushing surfaces, said members being rotatable to feed material along the crushing surfaces thereof, and means for permitting liquid under pressure to act directly between said members for moving one of said members along said axis to crush material.

7. A crusher comprising a pair of rigid crushing members symmetrically disposed about a common axis and rotatable to feed material along the crushing surfaces, and means for permitting liquid under pressure to act directl between said members for moving one o said members to crush material. I

8. A crusher comprising a pair of rigid crushing members symmetrically disposed about a common axis and having crushing portions of said members for forcing saidl members apart.

10. A crusher comprising a pair of rotatable crushing members having constantly inter-meshingcorrugations, and fluid pressure actuated means effecting the relative approach of said members to crush material.

ll. A Crusher comprising a pair of rigid epposed corrugated crushing members symmetrically disposed about a common axis and having crushing surfaces, said members being rotatable to eed material along the crushing surfaces thereof, a positive driving connection bet-Ween said members, and Huid pressure actuated means for moving at least one of said members toward the other to crush material.

12. A crusher comprising a pair of opposed corrugated crushing members having crushing surfaces, said members being rotatable to feed material along the crushing surfaces thereof, a positive driving connection between said members, and means for moving at least one of said members toward the other to crush material.

13. In a crusher, a pair of opposed crushing members, a cylinder carried by one of said members, a piston carried by the other of said members, and means for admitting 'fluid pressure to the interior of said cylinder whereby said piston is moved to effect crushing.

14. A Crusher comprising a pair of rigid crushing members symmetrically disposed about a common aXiS, fluid pressure actuated means for moving at least one of said meaaaa members Itoward the other to crush material, and spring means coacting directly between portions of said members for moving said members away from each other.

15. In a crusher, a air of opposed crushing members, a cylin er carried by one of said members, a piston carried by the other of said members, and means for alternately admitting and exhausting fluid to and from the interior of said cylinder whereby said piston is reciproeated and crushing is effected.

16. In a Crusher, a pair of opposed crushing members, a casingV carried by one of said members, a piston carried by the other of said members, means for admitting iuid to the interior of said casing and against said piston whereby said piston is moved to crush material, and automatic means for by-pass-V ing said fluid when the motion of said piston is suddenly arrested.

17. vIn a Crusher, a pair of crushing members, means vfor forcing fluid between op'- posed surfaces carried by said members whereby relative motion between the members to crush material is produced, and means for replenishing the leakage of fluid.

18. A crusher comprising `a pair of crushing members having crushing surfaces, said members being rotatable to feed material along the crushing surfaces thereof, means for taking up between the members the reactive ythrust induced by crushing, and means for establishing fluid pressure acting directly on portions of said members for causing said crushing surfaces to relatively approach each other.

19. A crusher comprising a pair of crushing members having crushingsurfaces, said members being rotatable to -teed material along the crushing surfaces thereof, means for taking up between the members the reactive thrust induced by crushing, and means for establishing fluid pressure acting directly on portions of said members for causing at least one of said members t0 move along its axis to crush material.

In testimony whereof,l the signature of the inventor is affixed hereto in the presence of two witnesses.

RAY C. NEWHOUSE.

TWitnesses W. H. LIEBER, CHAs. L. BYRON. 

